Add library UI, spatial nav & game launcher

Introduce a full library feature: add new frontend modules (libraryBridge, libraryComponents, libraryController, libraryFilters, libraryModel) and refactor library view JS to use them; implement rich library CSS and UI templates in index.html (new hints, sidebar entries). Rework spatial navigation (src/core/nav.js) with a geometry-based picker, anchor behavior, sidebar/content regions and integration hook for external nebula navigation; add navigation refresh handling in main.js. Update controller/state glyphs to include a 'clear' button. On the Tauri backend, add a launch_library_game command and its result type, wire it into lib.rs commands, and adjust DB upsert to handle app_kind correctly and export list_games usage. Misc: various wiring to load/scan/launch library items and improved focus/keyboard behaviors.

src-tauri/src/lib.rs

@@ -1,7 +1,9 @@
 mod library;
 mod storage;
 
-use library::commands::{list_library_games, scan_library_command, update_library_game};
+use library::commands::{
+    launch_library_game, list_library_games, scan_library_command, update_library_game,
+};
 use rusqlite::{params, Connection, OptionalExtension};
 use serde::Serialize;
 use std::time::{SystemTime, UNIX_EPOCH};
@@ -199,6 +201,7 @@ pub fn run() {
             get_first_user,
             create_user,
             list_library_games,
+            launch_library_game,
             scan_library_command,
             update_library_game
         ])

src-tauri/src/library/commands.rs

@@ -1,9 +1,18 @@
-use super::db::{ensure_library_schema, update_customization};
+use super::db::{ensure_library_schema, list_games, update_customization};
 use super::models::{GameCustomizationRequest, LibraryGame, LibraryScanRequest, ScanSummary};
 use super::{list_visible_games, scan_library};
 use crate::storage::AppStorage;
+use serde::Serialize;
 use std::path::PathBuf;
 
+#[derive(Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct LaunchLibraryGameResult {
+    pub launched: bool,
+    pub action: String,
+    pub message: String,
+}
+
 #[tauri::command]
 pub async fn scan_library_command(
     request: LibraryScanRequest,
@@ -45,3 +54,45 @@ pub async fn update_library_game(
     .await
     .map_err(|err| format!("Library update task failed: {err}"))?
 }
+
+#[tauri::command]
+pub async fn launch_library_game(
+    game_id: i64,
+    storage: tauri::State<'_, AppStorage>,
+) -> Result<LaunchLibraryGameResult, String> {
+    let storage = storage.inner().clone();
+    tauri::async_runtime::spawn_blocking(move || {
+        let conn = storage.connect_library()?;
+        ensure_library_schema(&conn)?;
+        let game = list_games(&conn, true)?
+            .into_iter()
+            .find(|game| game.id == game_id)
+            .ok_or_else(|| "Library app was not found.".to_string())?;
+
+        let launch_target = game
+            .launch_command
+            .as_deref()
+            .or(game.executable_path.as_deref())
+            .unwrap_or(game.install_path.as_str());
+
+        // Future provider launchers plug in here:
+        // Steam: steam://run/<appid>, GOG/Epic URI handlers, emulator profiles,
+        // and native executable spawning with per-app environment overrides.
+        println!(
+            "[NebulaOS] launch placeholder: {} via {}",
+            game.user_title.as_deref().unwrap_or(&game.title),
+            launch_target
+        );
+
+        Ok(LaunchLibraryGameResult {
+            launched: true,
+            action: "placeholder".to_string(),
+            message: format!(
+                "Launch requested for {}.",
+                game.user_title.unwrap_or(game.title)
+            ),
+        })
+    })
+    .await
+    .map_err(|err| format!("Library launch task failed: {err}"))?
+}

src-tauri/src/library/db.rs

@@ -133,7 +133,7 @@ pub fn upsert_candidate(
             executable_path,
             launch_command,
             description,
-            app_kind.as_str(),
+            app_kind,
             steam_app_type,
             genres_json,
             steam_categories_json,